<img src=https://huaweicloudobs.ahjxjy.cn/E285729361C8255EED427B6769C26599.png title=4.png alt=4.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/3921DA6BF6A228B85831C66C596A50C6.png title=4-1.png alt=4-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/96890382153F88A88887663E157497EB.png title=4-2.png alt=4-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/0CDE5B7F13D5136BA1E33FEEA409E4D3.png title=4-3.png alt=4-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/DBDDB437DA76FDDF816E204D8AF1F37D.png title=4-4.png alt=4-4.png/>